Q.7.Dorji has a few bottles of soft drinks in his restaurant. But, unfortunately, these are not labeled. He has to serve the drinks on the demand of customers. One customer wants an acidic drink, another wants a basic one and the third one wants a neutral drink. How will Dorji decide which drink is to be served to whom

Q.8. Explain why:

(a) An antacid tablet is taken when you suffer from acidity.

(b) Calamine solution is applied on the skin when an ant bites.

(c) Factory waste is neutralized before disposing it into the water bodies.